Ejemplo n.º 1
0
static const bfd_arch_info_type *
bfd_m68k_compatible (const bfd_arch_info_type *a,
		     const bfd_arch_info_type *b)
{
  if (a->arch != b->arch)
    return NULL;

  if (a->bits_per_word != b->bits_per_word)
    return NULL;

  if (!a->mach)
    return b;
  if (!b->mach)
    return a;
  
  if (a->mach <= bfd_mach_m68060 && b->mach <= bfd_mach_m68060)
    /* Merge m68k machine. */
    return a->mach > b->mach ? a : b;
  else if (a->mach >= bfd_mach_mcf_isa_a_nodiv
	   && b->mach >= bfd_mach_mcf_isa_a_nodiv)
    {
      /* Merge cf machine.  */
      unsigned features = (bfd_m68k_mach_to_features (a->mach)
			   | bfd_m68k_mach_to_features (b->mach));

      /* ISA A+ and ISA B are incompatible.  */
      if ((~features & (mcfisa_aa | mcfisa_b)) == 0)
	return NULL;

      /* MAC and EMAC code cannot be merged.  */
      if ((~features & (mcfmac | mcfemac)) == 0)
	return NULL;

      return bfd_lookup_arch (a->arch, bfd_m68k_features_to_mach (features));
    }
  else
    /* They are incompatible.  */
    return NULL;
}
Ejemplo n.º 2
0
static const bfd_arch_info_type *
bfd_m68k_compatible (const bfd_arch_info_type *a,
		     const bfd_arch_info_type *b)
{
  if (a->arch != b->arch)
    return NULL;

  if (a->bits_per_word != b->bits_per_word)
    return NULL;

  if (!a->mach)
    return b;
  if (!b->mach)
    return a;

  if (a->mach <= bfd_mach_m68060 && b->mach <= bfd_mach_m68060)
    /* Merge m68k machine. */
    return a->mach > b->mach ? a : b;
  else if (a->mach >= bfd_mach_cpu32 && b->mach >= bfd_mach_cpu32)
    {
      /* Merge the machine features.  */
      unsigned features = (bfd_m68k_mach_to_features (a->mach)
			   | bfd_m68k_mach_to_features (b->mach));

      /* CPU32 and Coldfire are incompatible.  */
      if ((~features & (cpu32 | mcfisa_a)) == 0)
	return NULL;

      /* Fido and Coldfire are incompatible.  */
      if ((~features & (fido_a | mcfisa_a)) == 0)
	return NULL;

      /* ISA A+ and ISA B are incompatible.  */
      if ((~features & (mcfisa_aa | mcfisa_b)) == 0)
	return NULL;

      /* ISA B and ISA C are incompatible.  */
      if ((~features & (mcfisa_b | mcfisa_c)) == 0)
	return NULL;

      /* MAC and EMAC code cannot be merged.  */
      if ((~features & (mcfmac | mcfemac)) == 0)
	return NULL;

      /* CPU32 is compatible with Fido except that Fido does not
	 support tbl instructions.  Warn when the user wants to mix
	 the two.  */
      if ((a->mach == bfd_mach_cpu32 && b->mach == bfd_mach_fido)
	  || (a->mach == bfd_mach_fido && b->mach == bfd_mach_cpu32))
	{
	  static int cpu32_fido_mix_warning;
	  if (!cpu32_fido_mix_warning)
	    {
	      cpu32_fido_mix_warning = 1;
	      (*_bfd_error_handler) ("warning: linking CPU32 objects with fido objects");
	    }
	  return bfd_lookup_arch (a->arch,
				  bfd_m68k_features_to_mach (fido_a | m68881));
	}

      return bfd_lookup_arch (a->arch, bfd_m68k_features_to_mach (features));
    }
  else
    /* They are incompatible.  */
    return NULL;
}